A somber procession on Tuesday night honored a Los Angeles County firefighter who was killed in a double shooting by an off-duty co-worker who later took his own life. Sheriff's homicide detectives continued to investigate the possible motive for the shooting, which occurred Tuesday morning at Fire Station 81 in Agua Dulce. Latest: https://abc7.com/agua-dulce-shooting-procession-honors-slain-firefighter/10733388/